Sanitary napkin having core predisposed to a convex upward configuration
First Claim
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1. A sanitary napkin having a longitudinal center line and a lateral centerline orthogonal thereto, and having longitudinal side margins and transverse ends, said sanitary napkin comprising:
- a liquid pervious topsheet;
a liquid impervious backsheet; and
an absorbent core intermediate said topsheet and said backsheet, said core having two major faces, a first major face oriented toward said topsheet and a second major face oriented toward said backsheet, said first major face having a discontinuous first line of weakness therein, said line of weakness being longitudinally concave towards said lateral centerline, said line of weakness comprising discrete sites, said discrete sites being bilaterally staggered about said line of weakness wherein said sanitary napkin deforms to a convex upward configuration while in use.
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Abstract
A sanitary napkin which deforms to a convex upwardly shaped cross section. The sanitary napkin has a line of weakness which is symmetric about the longitudinal axis and longitudinally concave towards the lateral centerline. In a preferred embodiment, the line of weakness is discontinuous and comprises discrete sites joining the topsheet and core. The discrete sites may be bilaterally staggered about the line of weakness.
42 Citations
13 Claims
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1. A sanitary napkin having a longitudinal center line and a lateral centerline orthogonal thereto, and having longitudinal side margins and transverse ends, said sanitary napkin comprising:
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a liquid pervious topsheet; a liquid impervious backsheet; and an absorbent core intermediate said topsheet and said backsheet, said core having two major faces, a first major face oriented toward said topsheet and a second major face oriented toward said backsheet, said first major face having a discontinuous first line of weakness therein, said line of weakness being longitudinally concave towards said lateral centerline, said line of weakness comprising discrete sites, said discrete sites being bilaterally staggered about said line of weakness wherein said sanitary napkin deforms to a convex upward configuration while in use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A sanitary napkin having a longitudinal centerline and a lateral centerline orthogonal thereto, and having longitudinal side margins and transverse ends, said sanitary napkin comprising:
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a liquid pervious topsheet; a liquid impervious backsheet; and an absorbent core intermediate said topsheet and said backsheet, wherein said absorbent core and said topsheet are joined together at discrete sites forming a first line of weakness symmetric about said longitudinal axis and longitudinally concave towards said lateral centerline, wherein said discrete sites are bilaterally staggered about said line of weakness. - View Dependent Claims (12, 13)
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Specification